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习题练习：Physics Unit19: DC Circuits
本习题练习试卷来源于51fly国际课程 (https://51fly.win)， 为试卷打印版，您也可以在网站平台(https://autodiscover.51fly.win/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 77，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://autodiscover.51fly.win/test77.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 作者: physics  发布日期: 2022-08-17 15:49    总分: 102分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月17日 12:52  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminaqtv+78h z: wsnls of a battery, when no current flows to an external circuit,+vwhtnq87z:s is referred to as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals ofr yfgqxbqztn8m1-2 1b,/jv9ckp, b o 7 a battery, when current flows to an external circuibjkg8q /b1 y pct7,,o9 bmrz-2 qxf1nvt, is referred to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connecf /yvajms54cx /ydy6( ted in series to a battery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are conqhjuot*-(+ 5q cb kmu*nected in series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are conneavn v0c;3ufy +jy+a2g bo-a:zcted in series to a battery. If the current of 12 A flows from the battery, how mua y3z a ;nf+:g-y2ocuv vb0+ajch current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to o3phxz.9.y7 q pmzi3da 12-V battery. What is the voltage across any onm.x p p3d79h3yzzqoi. e of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in/ r.phhuoo4g.t n/ v5t series to a constant voltage source, the power supplied by the sourog/5.p4uth/.v onrh tce

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in pazmiwwk/ jo;bfc;0lxp gxl/rt*hi:;+,-o* xq rallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connect 7,wcsze5af1*5yu/tc)wfn lied in parallel, we can be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a 1k/rj q 8fkf l)lh b w1ts/,c)-zps7;oh2-V battery. What is the voltage of any one of the resistors?8okj,) /) qk/hzlwcfp-1lt hrsf sb;7

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connect, yxeip)s3ni1h* i+z 2)tejygzp1a/ fy1aj:m ed in parallel to a battery. If the current of 12 A flows from the battery, how muchzapi1ii3j1 s e y *+patmhzyejxg2))1, f/y: n current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas tree lights are connected in parallel. Wh+4obd.n)o kb bwyl k*/ezmw*.at happens if one lamp burns out? (Assume negligible resistance in the wireskl+*4b.zydew/)k ow .nobm*b leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in parallel to a constr)-cw38wvepe ant voltage source, the power ece)wpwrv3 -8supplied by the source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, eacx knja(q3w;9.mxtnn w 2t.jg-h of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a thirdj ;a. -qtk.j2mgn9n 3twxw(n x is connected in parallel with these two. What is the maximum power this network can dissipate?

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's junction rule.qn 99qn8v0+n(ef phlv0bp- v(6 - v 4sctihaub
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loopms;ltt)b8v nx5dc /u( rule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rule is .:k),y shy 8oe*94dkvhpdw cvan example of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rule is an exam/ imjd*eq lude5z d5 bqb3j;,)ple of

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the equations here is valid for the circuit7 j wym ameal8e2 joqms:1k/.9 shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batterik+ wj-so-9e 6a jply)y7 nc2cxes together in series ("+" to "-" to "+" jewocs-)j-n x+ a79kc 6 y2lypto "-"), and place them in a circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in seriesdr)h:)buooh t)5f9 bw(u /ed 6j6d gyt ("+" to "-" to "-" to "+"), and place them inyf uw9o6:dheb5 d /6j rtg)bu ())odth a circuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage baim 2lofv;:6dh tteries together in parallel, and place them iom ;h ivl2:6fdn a circuit, the combination will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in series to a batdc17kv *1eot wqut2 q0tery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors arog uc7t8)sa.i. m*:ns-arcf q e connected in series, the equivalent capacitance of the combination r )gs8 u.f:mo-ac.c anti*7qsincreases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors v 4*m0tp+b xbro5h88ks s5pzcare connected in series to a battery. If a total charge of Q flows from the battery, how much charge5c88*bz4px s +kpm s5bo 0vtrh does each capacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are6zdympe8 0ceg v2)1cw (7h9aipirv,h connected in parallel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in paralhr atm9- z+ss2lel, the equivalent capacitance of the combination irtm- 9sasz2 +hncreases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a battemxz b;ezx;29dry. If a total charge of Q flows from the battery, how much charge does mz xzb9;edx;2each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for gy 7ok t 5t ll9y3g04k)o7hbqsthe quantity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in seriesm3oqu m,2c1 dm to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capacitorm,md3 c o2qm1u is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in+s5 uvt7.r,0ekoq tzj zy:f2t series to an ideal battery of constant terminal voltage. At the moment contact is made with thet+07f,2z5jteuosvq tzk ry: . battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor ar hh x)znpd pss 3.w1vy3ma*)(:yvscs3e connected in series to an ideal battery of constant terminal voltage. p w) *m3sysndp) 3zyh(3hx1vcass:v. When this system reaches its steady-state, the voltage across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shouldup*)-it iiuro a ./+uf

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can be9o2q, 0pkx3eem;n de g converted to an ammeter by the addition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtained by prope;nwy35 s4r j ed8auak,rly placing an ammeter in a circuit consisting of one resistor and onwa,d5;unyarsj8 e 4k3e battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of anr33 rl )ve t zb8aa0pw)ii/1fj ammeter's shunt resistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct a vug5,:q0h tcyefy1 7; xnklx+ eoltmeter from a galvanometer, one normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistanceknim957+/ x*mezxsm 1y9p tcy of a voltmeter's series resistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmeter acros)bpqnyqt6.3k s a resistor. What happens to the total current flowpk y3qtb).qn 6ing in the circuit as a result of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in serieswb, d+w , nhb*sm,+e0cgk7qxj with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. Thihsw+bj kg bwe,7m,+qnc0 *x,ds network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with wsl jw.:b mj50b4v zk-an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a bm:kwv zb w.jjl-45sb0attery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, qya 9t x76kjnqb*tpupo: t((65.0, and 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 16zi3s iyy 23 lemu3ed eli 6r5ngba1642, and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and hhvipw (w5 x496.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combin6(zb91l q 2ze qyfa8zx 1+eljmation of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combination o , wr-d41g ;y6p.l-luuhskgnpf a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flowsb-g (ftvwl0 ,i into a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows int )y c7cn3d ego97nsff3o a parallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into 8shi5;gk97k b rmk8 vqa parallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circuitnfm9+uqzvu q.zg691h : 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they z.u 9hnu+q1 qgm9z6vf draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum number of 100-W light bulbs you can connect in parallel in q1he83c2fyhv n6q x4vcw 9v*q a 120-V circuf8y21n4v v*v9x3 cq q6wcqehh it without tripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0, hlfhzyhf2h3 :m( /ew $\Omega$ resistor connected in series with 4.0 $\Omega$ resistor is connected in parallel with a 3.0 $\Omega$ resistor. What is the equivalent resistance?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 4.0 $\Omega$ resistors are connected in parallel, and this combination is connected in series with
3.1 W. What is the effective resistance of this combination?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0 $\Omega$ resistor is in series with a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What is the equivalent resistance of this combination?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 15 sv(ag *n-lx 1 kbu,:o g(fu*6pwrs5btand 30 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, a 3 bbew ky*m+ tkdp.;:zx: 17uktyqvr1nd 10.0 $\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9my3/j h5syy 44 rc8ypmq+ kf,i.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 4.0 $\Omega$ resistor?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 a;b2nny k vyc-5nd 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 5.0 $\Omega$ resistor?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.0+atbr- xyhxt*35de; -;rsghh0 dr-oh $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 9.0 $\Omega$ resistor?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.0 $\Omega$ resistor is connected in parallel with a 6.0 $\Omega$ resistor. This combination is connected in series with a 4.0 $\Omega$ resistor. The resistors are connected to a 12-volt battery. How much power is dissipated in the 3.0 $\Omega$ resistor?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistanu: b jy8hqr3dk/phg5) ce of the circuit in Fig. 19-2?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 40 \; V$, what is the voltage on R1 in Fig. 19-2?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 20 \; V$, what is the current through $R_3$ in Fig. 19-2?


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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If 1.5 A flows throug ru+;ckt1 ixq9h $R_2$, what is $E$ in Fig. 19-2?


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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance 7q.gf-m)x) pz vqi*nfclv *1 qof the circuit in Fig. 19-3?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 100 \; V$, what is the voltage across $R_5$ in Fig. 19-3?


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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 4.0 \; V$, what is the current through $R_6$ in Fig. 19-3?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determ2r-4 f*8hxln+bd/ q-u onmr) gkz *syhine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determ 7delvz+ cnv6jh-;s b2ine the current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current in the. q.j5fstqz( t 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point A relative to point q klhie)myoiih0 3j 4m2pn8)4C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point C in Fig. 19-5?c76;xkbg 5eiqczg)0 r


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative to poino:1atw1h e hxgg8u -2ot C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the battery inee 0t4jxtjxsf.n z2+*ly ps,1 Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point 6ypk4ywbo;br .oc pxhujx)r3s jw44u3c*9l 7A to point B in Fig. 19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 7 2(b*jgjtkw 8y $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current )yg6)i00yjjjp kg b51w,bpq zjp89rvin the 8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 4 wo bb nfah ; +(nspp/lg3v/6;i$\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the (.nlpd8 gkc46ty)0m )e;f durf:ax ip12 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the 1ccj0/2su5usw t y- 6tq8 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper left and loem1d ck2b7:9 ysaf: xmwer left coasc2:ky 9edmxfb 7: 1mrners?

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 16 mF capacitors are connected in series. The equivalent capacita)0dcil90wx 3l+bhj )r2q ud8 tnku3mtnce of th 0 3+0b jl h2kcwu8dix)ru3t9dlnq t)mis combination is

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF c+- pw6h4tv q0s /insk)4jm2wf 2okoprapacitors are connected in series across a 12.0-V battery. si4 q4wj) vp2k +0ot/prn26-fsh mkow How much charge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are b:aicnuhh;q07 h:0 imotbak *m+t.f( connected in series across a 12.0-V battery. What is the potential diffeak tc.n 0huqii0(+b:a;:hfo b*thmm7 rence across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across a 3.0-V battery.,-. o8npddvv m What is the voltage across the 1.0-mF capacp .ddm8v-, ovnitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across a 3.he04y . o)nxl9)3 x k5jxcoyhn0-V battery. What is the voltage xno j4 ) ye90l.ncx5)3ykohhxacross the 2.0-mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3 ;p ga/sh*w/eu.0 mF capacitors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacita *sp eu;g/w/hors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, and thisfx)0./w0n- t gl.wmvdg( slbq pair is then connected fx .m bg0s lq(t/0dnlg-)vww .in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in pahxe8:i) tl pwrjc*v)*j dkw-)rallel. The combination is then connected in series with a 12.0-V battery and a 14wj)d pi exw t*:)vc)khl*jr-8.0-mF capacitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in s3fv d-p*i0h4: p ;bvft bhdt;parallel. The combination is then connected in seriesp*b sv3 :tdh 4ftfih ;-vbd;p0 with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF an9whfe885)*zi1 iueyyb ec w *vd 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage*ub f cw1i5)ey8 8wyeev*zh9 i across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charyt9ykc:j). qbfee7ogpz2 5 w, ,ryw1fged through a 50 $k\Omega$ resistor. How long does it take for the capacitor to reach 90% of full charge?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged to 12 V and the2--.cxoltzk a g(/um rn discharged through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a jb,:8fjwnab1*uuyrz+ 2f sp*0.50-mF capacitor. The capacitor is initially uncharged. The RC combinatiz 1raus+2uj,*fy:fw p j*b8bnon is charged by a 9.0-V battery. What is the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charlauow4az:t9 h2209.2qy, h lovi jv ljged to 6.0-V. It is then connected in series with a 3.lq9,o2 9jv. ut0hly4:awoljih 22va z0 $M\Omega$ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistance u4z)hdof5;iam 17pr 03pdvvd( ;xkd pof 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a cor 6 +c-67. .oik un*dkzy-glf3ez shuuil with a resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resid / 5vr/xaz(tystance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a coil resistance of 40.xgna4+ fnw/-s 0 $\Omega$ deflects full scale for a current of 2.0 mA. What series resistance should be used with this galvanometer in order to construct a voltmeter that deflects full scale for 50 V?

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